Bhagavad Gita · 3.40

इन्द्रियाणि मनो बुद्धिरस्याधिष्ठानमुच्यते।एतैर्विमोहयत्येष ज्ञानमावृत्य देहिनम्॥

indriyāṇi mano buddhir asyādhiṣhṭhānam uchyate etair vimohayaty eṣha jñānam āvṛtya dehinam

The senses, the mind, and the intellect are said to be the seat of desire. Through these, it covers knowledge and deludes the embodied soul.

— Bhagavad Gita 3.40

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)